Coupling.



UNITED STATES FATE T or: ICE.

JAMES G. ZlMMlillBlAN, F MlL-WAYKEB, \YIStQfSSIN.

COU

Application filed June 25. 1906. Serial No. 323.238.

To all tr/mm. it may concern w it known that l. J.\ nus (l. ZIAUU-JIHIAX,

a citizen of the United States. residing at Milwauket, county of ltlilwaukee. State of lfittmfltt. hare inrented certain new and llatlllll lntprmelnt'nte H1 Couplmg-=., ot which it comprises. a sheet metal shell or cap which co-aets with a; conical spreader to clamp the end of a flexible hose or tube and join it seeml} to a Second tube and at the.

same time furnish an unrestricted channel tor the passage of thud through the tubes.

The details 0t my invention will be better understood h reference to the following (1e: seription taken in connection with the accompanying drawing in which- Figure 1 is an elevation of the coupling in place on the tubes; Fig. 2 is a section thereof; Fig. 3 is a perspective view of one of the swaged caps; Fig. 4 is a modified form of spreader and Fi 5 FllUWS a modification.

Thicoupling shown in Fi". 2 comprises a tubular spreader l and two pressed metal caps .2 and 3. The spreader is preferably made of a einglc piece. of metal and may be Specification of Letters Patent.

PLING.

Patented Au 17, 1909.

or may even be made during the tirrit pre=sing or stamping operation. The spiral Fwage gives the a str ugth and resilience throughout the c indrical portion 9 and also .-=er\'c.- as a means for eugzagetuent with the tnher cap it. The uu-swaged or conical portion 8 ol' the cap i more or less flexible and i hus able to lit tightly against the rubber hose even though the latter may be slightl 'out of center. The helical wages of the caps- 2 and 3 serve as threads to join the cape: together and thereby force the ends of the tubes 6 and 7 up against the conical ends l and 5) of spreader 1.

Fig. 4 shows partly. in section, a modified form of hiil'ttltlt'l' (o1t--'i. ting of two stamped metal tubes: 12 and 13 provided with conical ahut'ments t-r and 13. This spreader may, if desired. be substituted for the unitary strong and easily applied and atthe, same time is light. in weight. and easy to manufacture. Owing to the resilience, of the caps I am able to connectand disconnectthe coupling by hand without a wrench ortool of any kind.. This is often a great convenience, as when the coupling is used on automobiles. The reailicncc of the caps and the size and shape of the helical st'agoi' reconveniently spun to shape. from a tubular rent. the caps from jamming" or wedgmg blank, as will be readily understood by persons skilled in the art. The. spreader is provided with conical ends 4 and 5 which WIN. to apt-cad out the flexible tubes t? and 7, and form abi'ttments against. which the flexible tubing 15 crowded by the cape and 3. The caps are of sheet metal and may be pressed or stamped into shape from blanks punched from a thin sheet. They may be of brass, steel or other resilient material, though when a coupling of especially light weight is desirable, as in automobile work,

1 may use aluminum.

ltet'erriug to Fig. 3, it will be seen that; ca p 2 consists oi two distinct parts, a conical together as is eonunon withcouplings of cast inetal having ordinary screw threads; and l'urtlu-rmorc the tenacious grip of the caps on each other preventthenrfrom jarrim: leose when sub ected to vibration.

The modification ahown in Fi 5 is adapted for use where a connection is desired between -t tlexible host: and a rigid metal tube. Such a connection is solnetimcs newtssary in joining the radiator of an automobile with its engine and pump.

As shown in the drawing, the flexible hose it; is clamped bet ween the sheet. metal cap 17 and the. conical spreader-'18, and the cap 17 has a spiral s age forming a thread which part 5 and a cylindrical part 9, the latter interlocks with a similar thread. on the having a helical swage or thread 10 pressed 1n the manufacture of thcec caps I follow ordinary methods of pressing or A blank of em suitable size. is first, pressed to a cup of the general shape of Fig. 3, after which the therein.

stan'tpiug sheet. metal ware.

ravage or thread i.-; rolled in. H desired the spreader The central bore. of tho spreader is provided with screw threads 19 of )Y'Optl pitch to engage with the threaded l ot an iron pipe of ordinaryt-ype. The central bore of the coupling is preferably made as large or larger than the. bore m the Mr in: irox'ed rou )liu i ada ited n t only l v i l a bottom it l5 punched out and the helical flexible tubing.

swag'e may be pressed in with a Special tool f r high and moderate pressure hose and irregular in thicknw's or may have its bore spreader shown in Fig. The coupling is I tithing of ordinary size and material bnt may also be atlvzmtageonsly used in small 517A? l swagos of rounded out-line pressed therein t tor connettmg up pneumatic pumps, syringe I tnlws illttl otht-r apparatus, with which a tl'ong. lightaml haml operative coupling is tltaitablt',

What I claim as urn aml th-si re to st'cttt't'. l| llvttors latvnt ol thov Unitvtl Status, is:

l. how rout-ling. comprihiag a re ilit-nt shvvt mvtal SlHtitltl having a c 'liialrical t'tllltl' portion with a hore largvr than that ol' lltt how to l t rouplotl, aml ha ring (-onical mulintt-g'ral thrrt-wit-h and forming abut.- lllt'lith for tho how vials, and a plurality of prmwtl hllttl nwtal raps each ha ring a rrsilivnt t-onit'al portion for holding a host. ontlagaitvt our of .-'ai\l ahntlnvnts. Ftlltl raps harinp; t' VllIHll'lI'iIl lmtlinth with shallow ht-liral \Vltltll ilttel'lmth' to hnhl said caps in position. '1. In a hoI-o ronpling. the conthlnatlon of a pr ador harang a rylnulrlcal center ortion with a hor at. h-ast an la rg'; as that ol the hose to hr. coupled, and having a. conical cntl formin; an abutment. and a sheet nwtal "up hating a (-oni -al portion for holding a tube ontl agaimt httltl ahntnu-nt'. aitl (ttHllt'ttl portion living lt ilit-nt. the saitl rap also having 

